Rotation structure with elastic protection casing

ABSTRACT

A rotation structure with an elastic protection casing includes a stator and a rotor. The rotor is sheathed on a periphery of the stator. A periphery of the rotor is provided with the elastic protection casing. The elastic protection casing is substantially annular and arranged to surround the periphery of the rotor. The elastic protection casing is sheathed on the periphery of the rotor.

FIELD OF THE INVENTION

The present application relates to the technical field of rotationstructures, and more particularly to a rotation structure with anelastic protection casing.

BACKGROUND OF THE INVENTION

Rotation structures, such as bearings, wheels, tires, and so on, areindispensable important parts of existing machine apparatuses.

In the prior art, a rotation structure needs to rotate continuously ordiscontinuously during a working process. Based on working requirements,a periphery of a rotation structure may need to engage with othercomponents in some cases, for example, in friction transmission.Generally, a periphery of an existing rotation structure is providedwith no protection structure, and the bare periphery engages with othercomponents directly or indirectly. Thus, the periphery may be subjectedto great radial impact, and the rotation structure may be damaged.Furthermore, the rotation structure is prone to be wetted in workingenvironments, and may contact corrosive gases or liquids directly and becorroded, such that the service life of the rotation structure isadversely affected. Additionally, noise of rotation structures is alwaysa common problem troubling technicians, because most existing rotationstructures have the shortcoming of too much noise.

SUMMARY OF THE INVENTION

A purpose of the present application is to provide a rotation structurewith an elastic protection casing, which aims to solve the problem thata rotation structure in the prior art may be subjected to too greatradial impact when transmitting power to other structures or devices,may be prone to be corroded and then damaged, and may generate too muchnoise.

The present application is realized by the following technical solution:a rotation structure with an elastic protection casing, comprising astator and a rotor; wherein, the rotor is sheathed on a periphery of thestator, a periphery of the rotor is provided with the elastic protectioncasing, the elastic protection casing is substantially annular andarranged to surround the periphery of the rotor.

Preferably, an inner surface of the elastic protection casing abutsagainst the periphery of the rotor, two sides of an outward end of theelastic protection casing extend outward and form an expanded structure,and step structures are respectively formed on an upper side surface anda lower side surface of the outward end.

Preferably, a height of each of the two side surfaces of the outward endof the elastic protection casing is larger than a height of the rotor.

Preferably, the stator is sheathed on a periphery of a stator shaft, anda rotor supporting frame is also sheathed on the periphery of the statorshaft; the rotor supporting frame is rotatably connected with the statorshaft, and the rotor is connected with the rotor supporting frame.

Preferably, a plurality of fastening members arranged spacedly aresheathed on the periphery of the rotor, and the inner surface of theelastic protection casing abuts against the fastening members.

Preferably, an upper end surface of the rotor is provided with an arrestframe, the arrest frame is arranged to extend along and surround theupper end surface of the rotor.

Preferably, the upper end surface of the rotor is provided with an upperfixing frame, the upper fixing frame is arranged to extend along andsurround the upper end surface of the rotor, one end of the upper fixingframe is connected with the arrest frame, and another end of the upperfixing frame extends towards the outward end of the elastic protectioncasing to form an upper pressing board pressing against the stepstructure on the upper side surface of the outward end of the elasticprotection casing.

Preferably, the upper pressing board presses against the step structureon the upper side surface of the outward end of the elastic protectioncasing and extends out of the step structure.

Preferably, one end of the rotor supporting frame is rotatably connectedwith the stator shaft, and another end of the rotor supporting frameextends towards the outward end of the elastic protection casing to forma lower pressing board pressing against the step structure on the lowerside surface of the outward end of the elastic protection casing.

Preferably, the lower pressing board presses against the step structureon the lower side surface of the outward end of the elastic protectioncasing and extends out of the step structure.

Compared with the prior art, the rotation structure provided by thepresent application comprises the elastic protection casing sheathed onthe periphery of the rotor. The elastic protection casing has theelastic deformation effect, when the rotation structure transmits powerto other structures or devices, the elastic protection casing can reduceradial impacts of external forces onto the rotor and protect theperiphery of the rotor, so that the service life of the rotationstructure can be greatly extended. Moreover, the elastic protectioncasing can absorb most noise generated by the rotation structure, suchthat the rotation structure can be suitable for situations with highrequirements.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic longitudinal cut-away view of a rotation structurewith an elastic protection casing provided by an embodiment of thepresent application;

FIG. 2 is an enlarged view of the part A shown in FIG. 1;

FIG. 3 is a schematic partial cut-away view of the rotation structurewith the elastic protection casing provided by the embodiment of thepresent application;

FIG. 4 is an enlarged view of the part B shown in FIG. 3.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

In order to make the purposes, technical solutions, and advantages ofthe present application be clearer, the present application will befurther described in detail hereafter with reference to the accompanyingdrawings and embodiments. It should be understood that the embodimentsdescribed herein are only intended to illustrate but not to limit thepresent application.

Realization for the present application will be described in detailhereafter with reference to the embodiments.

FIGS. 1-4 show a preferred embodiment of the present application.

As shown in FIGS. 1-4, this embodiment provides a rotation structure 1,which can be used in various machine apparatuses as various parts, forexample, as a power transmission device, a rotation wheel, or a tire. Aslong as a component needs to have rotation effect, the rotationstructure 1 provided by this embodiment can serve as the component.

The rotation structure 1 includes a stator 102 and a rotor 103. Therotor 103 is substantially annular and sheathed on a periphery of thestator 102, there is a gap between an inside of the rotor 103 and anoutside of the stator 102, so that the rotor 103 can rotate relative tothe stator 102. An elastic protection casing 104 is sheathed on aperiphery of the rotor 103, the elastic protection casing 104 issubstantially annular and protrudingly arranged around the rotor 103.

The above-described rotation structure 1 includes the elastic protectioncasing 104 sheathed on the periphery of the rotor 103. Since the elasticprotection casing 104 will be deformed when being subjected to anexternal force and resume its original shape (or at least a shape thatis very approximate to its original shape) when the external force isremoved, radial impacts of external forces onto the rotation structure 1can be reduced during a working process. Moreover, since the elasticprotection casing 104 is sheathed around the periphery of the rotor 103,it can prevent the periphery of the rotor 103 from being wetted orcontacting corrosive gases or liquids directly, such that the rotationstructure 1 is protected and thus the service life of the rotationstructure 1 is greatly extended. Additionally, when the rotationstructure 1 is rotating, most noise generated by the rotation structure1 is absorbed by the elastic protection casing 104, such that the noisecan be greatly reduced and the rotation structure 1 can be suitable formany situations with high requirements.

Additionally, when the rotation structure 1 needs to engage with othercomponents, the elastic protection casing 104 can be used to contactother components directly, and thus the circumferential friction of therotation structure 1 can be greatly increased. For example, when therotation structure 1 is used as a power transmission component,connecting other components through the outside elastic protectioncasing 104 can obtain much better effect than connecting othercomponents through the rotor 103 directly, both the circumferential andaxial frictions can be greatly increased.

In this embodiment, the elastic protection casing 104 is substantially aclosed loop, that is, it is arranged to surround the periphery of therotor 103 continuously. In this way, the elastic protection casing 104forms a substantial ring body, of which a longitudinal section has apolygonal shape. Of course, a specific shape of the polygonal sectioncan be determined according to actual requirements.

In other embodiments, the shape of the elastic protection casing 104 canalso be discontinuous annular, that is, the elastic protection casing104 is arranged to surround the periphery of the rotor 103discontinuously. The specific arrangement can be determined according toactual requirements.

An inner surface of the elastic protection casing 104 directly abutsagainst the periphery of the rotor 103, two sides of an outward end ofthe elastic protection casing 104 extend outward respectively and forman expanded structure, that is, step structures are formed between aninward end of the elastic protection casing 104 and the outward end ofthe elastic protection casing 104, and a height of each of the two sidesof the outward end of the elastic protection casing 104 is larger than aheight of the rotor 103. In this way, two sides of the periphery of therotor 103 extend out of two ends of the rotor 103 so as to protect thetwo ends of the rotor 103 and prevent the two ends of the rotor 103 frombeing impacted by external components.

In order to improve the friction performance of the elastic protectioncasing 104, an outer surface of the elastic protection casing 104 isprovided with an uneven structure 100. When the outer surface of theelastic protection casing 104 engages with other components, the unevenstructure 100 on the outer surface can greatly increase the frictionbetween the outer surface and other components.

In this embodiment, the stator 102 is sheathed on a periphery of astator shaft 101, and a rotor supporting frame 106 is also sheathed onthe periphery of the stator shaft 101. The rotor supporting frame 106 isconnected with the stator shaft 101 through a bearing 108, such that therotor supporting frame 106 can rotate relative to the stator shaft 101.Of course, the rotor supporting frame 106 can also be connected with thestator shaft 101 through other rotation structures, such as balls orrollers, as long as they can enable the rotor supporting frame 106 torotate relative to the stator shaft 101, in other words, can realize arotatable connection between the rotor supporting frame 106 and thestator shaft 101.

The rotor 103 is connected with the rotor supporting frame 106 andsheathed on the periphery of the stator 102. The aforementioned gap isformed between the inside of the rotor 103 and the outside of the stator102. Along with the rotation of the rotor supporting frame 106 relativeto the stator 102, the rotor 103 can also rotate relative to the stator102.

A plurality of fastening members 107 arranged spacedly are sheathed on aperiphery of the rotor 103. The plurality of fastening members 107 arearranged to surround the periphery of the rotor 103. It should beunderstood that the arrangement of the fastening members 107 can be auniform surrounding arrangement, that is, intervals between adjacentfastening members 107 are identical. However, the arrangement of thefastening members 107 can also be an uneven surrounding arrangement, andthe specific arrangement method can be determined according to actualrequirements.

The elastic protection casing 104 is sheathed on the periphery of therotor 103, and the inner surface of the elastic protection casing 104abuts against the fastening members 107. In this way, along with therotation of the rotor 103, the fastening members 107 rotate, and theelastic protection casing 104 rotates relative to the stator 102 too.

In this embodiment, an upper end surface of the rotor 103 is providedwith an arrest frame 109. The arrest frame 109 is substantially annularand arranged to extend along the upper end surface of the rotor 103. Thearrest frame 109 is fixedly connected on the rotor 103, and can rotatealong with the rotation of the rotor 103.

In order to further improve the stability of the elastic protectioncasing 104 so as to connect the elastic protection casing 104 with therotor 103 fixedly, in this embodiment, the upper end surface of therotor 103 is provided with an upper fixing frame 105, which is arrangedto extend along and surround the upper end surface of the rotor 103. Oneend of the upper fixing frame 105 is connected with the arrest frame109, it should be understood that the upper fixing frame 105 can beconnected with the arrest frame 109 by the fastening members 107, forexample, screws, and can also be connected with the arrest frame 109 byother various connection methods, as long as they can enable the upperfixing frame 105 to be fixedly connected with the arrest frame 109.Another end of the upper fixing frame 105 extends towards the outwardend of the elastic protection casing 104 to form an upper pressing board1052, the upper pressing board 1052 presses against the step structureon the upper side surface of the outward end of the elastic protectioncasing 104, such that the upper pressing board 1052 secures the elasticprotection casing 104 from the upper end surface.

In particular, the upper pressing board 1052 presses against the stepstructure on the upper side surface of the outward end of the elasticprotection casing 104 and extends out of the step structure. In thisway, the pressure towards the upper side surface of the elasticprotection casing 104 can be increased. Of course, correspondingly, theupper pressing board 1052 can be provided with a matching structurecorresponding to the step structure, thereby ensuring the abuttingconnection between the upper pressing board 1052 and the upper sidesurface of the elastic protection casing 104.

In this embodiment, one end of the rotor supporting frame 106 isrotatably connected with the stator shaft 101, and another end of therotor supporting frame 106 extends towards the outward end of theelastic protection casing 104 to form a lower pressing board 1061. Thelower pressing board 1061 presses against the step structure on thelower side surface of the outward end of the elastic protection casing104, such that the lower pressing board 1061 secures the elasticprotection casing 104 from the lower end surface.

In particular, the lower pressing board 1061 presses against the stepstructure on the lower side surface of the outward end of the elasticprotection casing 104 and extends out of the step structure. In thisway, the pressure towards the lower side surface of the elasticprotection casing 104 can be increased. Of course, correspondingly, thelower pressing board 1061 can be provided with a matching structurecorresponding to the step structure, thereby ensuring the abuttingconnection between the lower pressing board 1061 and the lower sidesurface of the elastic protection casing 104.

In this way, the inner surface of the elastic protection casing 104abuts against the fastening members 107 arranged at the periphery of therotor 103, and the upper and lower side surfaces are pressed by theupper pressing board 1052 and the lower pressing board 1061respectively, so that the elastic protection casing 104 is fixed alongseveral directions, and thus the elastic protection casing 104 is stablyconnected with the periphery of the rotor 103.

In this embodiment, the inner surface of the elastic protection casing104 can be connected with the periphery of the rotor 103 in a way ofdirect adhesion or direct engagement. Of course, it is also possible toperform injection molding around the periphery of the rotor 103 to formthe elastic protection casing 104. There can also be many connectionmethods, and the specific method can be determined according to actualrequirements.

The rotation structure 1 provided by this embodiment can be used asvarious components. As long as rotation effect is required, the rotationstructure 1 can be adopted. It should be understood that when the rotor103 is integrated with the stator 102, for example, the stator shaft 101is fixed on a carriage by any possible method, the rotor 103 and thestator 102 of the rotation structure 1 can form a smart hub, and thewhole rotation structure 1 can serve as a tire.

The above are only preferred embodiments of the present application andare not intended to limit the present application. Any modification,equivalent replacement, and improvement made within the spirit andprinciple of the present application should be included in theprotection scope of the present application.

1. A rotation structure with an elastic protection casing, comprising astator and a rotor, wherein the rotor is sheathed on a periphery of thestator, and characterized in that: a periphery of the rotor is providedwith the elastic protection casing, the elastic protection casing issubstantially annular and arranged to surround the periphery of therotor.
 2. The rotation structure with an elastic protection casing ofclaim 1, wherein an inner surface of the elastic protection casing abutsagainst the periphery of the rotor, two sides of an outward end of theelastic protection casing extend outward and form an expanded structure,and step structures are respectively formed on an upper side surface anda lower side surface of the outward end.
 3. The rotation structure withan elastic protection casing of claim 2, wherein a height of each of thetwo side surfaces of the outward end of the elastic protection casing islarger than a height of the rotor.
 4. The rotation structure with anelastic protection casing of claim 1, wherein the stator is sheathed ona periphery of a stator shaft, and a rotor supporting frame is alsosheathed on the periphery of the stator shaft; the rotor supportingframe is rotatably connected with the stator shaft, and the rotor isconnected with the rotor supporting frame.
 5. The rotation structurewith an elastic protection casing of claim 1, wherein a plurality offastening members arranged spacedly are sheathed on the periphery of therotor, and the inner surface of the elastic protection casing abutsagainst the fastening members.
 6. The rotation structure with an elasticprotection casing of claim 1, wherein an upper end surface of the rotoris provided with an arrest frame, the arrest frame is arranged to extendalong and surround the upper end surface of the rotor.
 7. The rotationstructure with an elastic protection casing of claim 1, wherein theupper end surface of the rotor is provided with an upper fixing frame,the upper fixing frame is arranged to extend along and surround theupper end surface of the rotor, one end of the upper fixing frame isconnected with the arrest frame, and another end of the upper fixingframe extends towards the outward end of the elastic protection casingto form an upper pressing board pressing against the step structure onthe upper side surface of the outward end of the elastic protectioncasing.
 8. The rotation structure with an elastic protection casing ofclaim 7, wherein the upper pressing board presses against the stepstructure on the upper side surface of the outward end of the elasticprotection casing and extends out of the step structure.
 9. The rotationstructure with an elastic protection casing of claim 1, wherein one endof the rotor supporting frame is rotatably connected with the statorshaft, and another end of the rotor supporting frame extends towards theoutward end of the elastic protection casing to form a lower pressingboard pressing against the step structure on the lower side surface ofthe outward end of the elastic protection casing.
 10. The rotationstructure with an elastic protection casing of claim 9, wherein thelower pressing board presses against the step structure on the lowerside surface of the outward end of the elastic protection casing andextends out of the step structure.